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	<div id="pagetitle"><h1>YUI Library Examples: DataSource Utility: DataSource.Local</h1></div>
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	<h2>DataSource Utility: DataSource.Local</h2>

	<div id="example" class="promo">
	<div class="example-intro">
	Use DataSource.Local to manage retrieval of local data, from JavaScript arrays and objects to DOM elements. A <a href="http://developer.yahoo.com/yui/3/dataschema/">DataSchema</a> plugin is used to normalize incoming data into a known format for consistency of usage by other components.
	</div>	

	<div class="module example-container ">
			<div class="hd exampleHd">
			<p class="newWindowButton yui-skin-sam">
                <a href="datasource_local_clean.html" target="_blank">View example in new window.</a>
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		</div>		<div id="example-canvas" class="bd">

		
	<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
	
	<form id="demo">
    <h4>Array</h4>
    <h6>Data</h6>
    <pre>
[
    {name:"abc",id:123,extra:"foo"},
    {name:"def",id:456,extra:"bar"},
    {name:"ghi",id:789,extra:"baz"}
]
    </pre>

    <h6>Schema</h6>
    <pre>
{
    resultFields: ["name","id"]
}
    </pre>

    <h6>Normalized data</h6>
    <input type="button" id="demo_array" value="Retrieve data =>">
    <div id="demo_output_array" class="output"></div>

    <h4>JSON</h4>
    <h6>Data</h6>
    <pre>
{
    "profile":{
        "current":160,
        "target":150
    },
    "reference": [
        {
            "category":"exercise",
            "type":"expenditure",
            "activities":[
                {"name":"biking", "calories":550},
                {"name":"golf", "calories":1000},
                {"name":"running", "calories":650},
                {"name":"swimming", "calories":650},
                {"name":"walking", "calories":225}
            ]
        },
        {
            "category":"nutrition",
            "type":"intake",
            "fruit":[
                {"name":"apple", "calories":70},
                {"name":"banana", "calories":70},
                {"name":"orange", "calories":90},
            ],
            "vegetables":[
                {"name":"baked potato", "calories":150},
                {"name":"broccoli", "calories":50},
                {"name":"green beans", "calories":30}
            ]
        }
    ],
    "program": [
        {
            "category":"exercise",
            "schedule":[
                {"day":"sunday", "activity":"swimming"},
                {"day":"monday", "activity":"running"},
                {"day":"tuesday", "activity":"biking"},
                {"day":"wednesday", "activity":"running"},
                {"day":"thursday", "activity":"swimming"},
                {"day":"friday", "activity":"running"},
                {"day":"saturday", "activity":"golf"}
            ]
        },
        {
            "category":"diet",
            "schedule":[
            ]
        }
    ]
}
    </pre>

    <h6>Schema</h6>
    <pre>
{
    resultListLocator: "reference[1].fruit",
    resultFields: ["name","calories"]
}
    </pre>

    <h6>Normalized data</h6>
    <input type="button" id="demo_json" value="Retrieve data =>">
    <div id="demo_output_json" class="output"></div>

    <h4>HTML Table (XML)</h4>
    <h6>Data</h6>
    <table id="myTable">
    <tr>
        <td>coffee</td>
        <td>1.25</td>
    </tr>
    <tr>
        <td>juice</td>
        <td>2.00</td>
    </tr>
    <tr>
        <td>tea</td>
        <td>1.25</td>
    </tr>
    <tr>
        <td>soda</td>
        <td>1.00</td>
    </tr>
    </table>

    <h6>Schema</h6>
    <pre>
{
    resultListLocator: "tr",
    resultFields: [{key:"beverage", locator:"td[1]"}, {key:"price", locator:"td[2]"}]
}
    </pre>

    <h6>Normalized data</h6>
    <input type="button" id="demo_table" value="Retrieve data =>">
    <div id="demo_output_table" class="output"></div>
</form>

<script type="text/javascript">
YUI().use("dump", "node", "datasource-local", "datasource-arrayschema", "datasource-jsonschema", "datasource-xmlschema", function (Y) {
    var myDataArray = [
            {name:"abc",id:123,extra:"foo"},
            {name:"def",id:456,extra:"bar"},
            {name:"ghi",id:789,extra:"baz"}
        ],
        myDataSourceArray = new Y.DataSource.Local({source:myDataArray}),
        myCallbackArray = {
            success: function(e){
                Y.one("#demo_output_array").setContent(Y.dump(e.response));
            },
            failure: function(e){
                Y.one("#demo_output_array").setContent("Could not retrieve data: " + e.error.message);
            }
        };

    myDataSourceArray.plug(Y.Plugin.DataSourceArraySchema, {
        schema: {
            resultFields: ["name","id"]
        }
    });

    Y.on("click", function(e){
        myDataSourceArray.sendRequest({callback:myCallbackArray});
    }, "#demo_array");

    var myDataJSON = {"profile":{"current":160,"target":150},"reference": [{"category":"exercise","type":"expenditure","activities":[{"name":"biking", "calories":550},{"name":"golf", "calories":1000},{"name":"running", "calories":650},{"name":"swimming", "calories":650},{"name":"walking", "calories":225}]},{"category":"nutrition","type":"intake","fruit":[{"name":"apple", "calories":70},{"name":"banana", "calories":70},{"name":"orange", "calories":90},],"vegetables":[{"name":"baked potato", "calories":150},{"name":"broccoli", "calories":50},{"name":"green beans", "calories":30}]}],"program": [{"category":"exercise","schedule":[{"day":"sunday", "activity":"swimming"},{"day":"monday", "activity":"running"},{"day":"tuesday", "activity":"biking"},{"day":"wednesday", "activity":"running"},{"day":"thursday", "activity":"swimming"},{"day":"friday", "activity":"running"},{"day":"saturday", "activity":"golf"}]},{"category":"diet","schedule":[]}]},
        myDataSourceJSON = new Y.DataSource.Local({source:myDataJSON}),
        myCallbackJSON = {
            success: function(e){
                Y.one("#demo_output_json").setContent(Y.dump(e.response));
            },
            failure: function(e){
                Y.one("#demo_output_json").setContent("Could not retrieve data: " + e.error.message);
            }
        };

    myDataSourceJSON.plug(Y.Plugin.DataSourceJSONSchema, {
        schema: {
            resultListLocator: "reference[1].fruit",
            resultFields: ["name","calories"]
        }
    });

    Y.on("click", function(e){
        myDataSourceJSON.sendRequest({callback:myCallbackJSON});
    }, "#demo_json");


    var myTable = Y.Node.getDOMNode(Y.one("#myTable")),
        myDataSourceTable = new Y.DataSource.Local({source:myTable}),
        myCallbackTable = {
            success: function(e){
                Y.one("#demo_output_table").setContent(Y.dump(e.response));
            },
            failure: function(e){
                Y.one("#demo_output_table").setContent("Could not retrieve data: " + e.error.message);
            }
        };

    myDataSourceTable.plug(Y.Plugin.DataSourceXMLSchema, {
        schema: {
            resultListLocator: "tr",
            resultFields: [{key:"beverage", locator:"td[1]"}, {key:"price", locator:"td[2]"}]
        }
    });

    Y.on("click", function(e){
        myDataSourceTable.sendRequest({callback:myCallbackTable});
    }, "#demo_table");
});

</script>
	
	<!--END SOURCE CODE FOR EXAMPLE =============================== -->
	
		
		</div>
	</div>			
	</div>
		
	<p>If you are working with local array data, use the DataSourceArraySchema plugin to normalize and filter the data into a consistent format:</p>

<div id="syntax-7a39110ca14dae23d354ae3414d9ce7a" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-arrayschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">    <span class="kw2">var</span> myData <span class="sy0">=</span> <span class="br0">&#91;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;abc&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">123</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;foo&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;def&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">456</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;bar&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2">            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;ghi&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">789</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;baz&quot;</span><span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#93;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myData<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        myCallback <span class="sy0">=</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li2"><div class="de2">                <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">                <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#125;</span></div></li><li class="li2"><div class="de2">        <span class="br0">&#125;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li1"><div class="de1">    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceArraySchema</span><span class="sy0">,</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">        schema<span class="sy0">:</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span><span class="st0">&quot;name&quot;</span><span class="sy0">,</span><span class="st0">&quot;id&quot;</span><span class="br0">&#93;</span></div></li><li class="li2"><div class="de2">        <span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li1"><div class="de1">    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"><span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-arrayschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span>
    <span class="kw2">var</span> myData <span class="sy0">=</span> <span class="br0">&#91;</span>
            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;abc&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">123</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;foo&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span>
            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;def&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">456</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;bar&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span>
            <span class="br0">&#123;</span><span class="kw3">name</span><span class="sy0">:</span><span class="st0">&quot;ghi&quot;</span><span class="sy0">,</span>id<span class="sy0">:</span><span class="nu0">789</span><span class="sy0">,</span>extra<span class="sy0">:</span><span class="st0">&quot;baz&quot;</span><span class="br0">&#125;</span>
        <span class="br0">&#93;</span><span class="sy0">,</span>
        myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myData<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span>
        myCallback <span class="sy0">=</span> <span class="br0">&#123;</span>
            success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
                <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span>
            <span class="br0">&#125;</span><span class="sy0">,</span>
            failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
                <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span>
            <span class="br0">&#125;</span>
        <span class="br0">&#125;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceArraySchema</span><span class="sy0">,</span> <span class="br0">&#123;</span>
        schema<span class="sy0">:</span> <span class="br0">&#123;</span>
            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span><span class="st0">&quot;name&quot;</span><span class="sy0">,</span><span class="st0">&quot;id&quot;</span><span class="br0">&#93;</span>
        <span class="br0">&#125;</span>
    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></pre></div><textarea id="syntax-7a39110ca14dae23d354ae3414d9ce7a-plain">YUI().use("datasource-local", "datasource-arrayschema", function(Y) {
    var myData = [
            {name:"abc",id:123,extra:"foo"},
            {name:"def",id:456,extra:"bar"},
            {name:"ghi",id:789,extra:"baz"}
        ],
        myDataSource = new Y.DataSource.Local({source:myData}),
        myCallback = {
            success: function(e){
                alert(e.response);
            },
            failure: function(e){
                alert("Could not retrieve data: " + e.error.message);
            }
        };

    myDataSource.plug(Y.Plugin.DataSourceArraySchema, {
        schema: {
            resultFields: ["name","id"]
        }
    });

    myDataSource.sendRequest({callback:myCallback});
});</textarea></div>
<p>Use the DataSourceJSONSchema plugin to normalize JSON data:</p>

<div id="syntax-289409c78b0a02d231320d800a4b9a12" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-jsonschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">    <span class="kw2">var</span> myData <span class="sy0">=</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">        <span class="st0">&quot;profile&quot;</span><span class="sy0">:</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            <span class="st0">&quot;current&quot;</span><span class="sy0">:</span><span class="nu0">160</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2">            <span class="st0">&quot;target&quot;</span><span class="sy0">:</span><span class="nu0">150</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        <span class="st0">&quot;reference&quot;</span><span class="sy0">:</span> <span class="br0">&#91;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">                ...</div></li><li class="li2"><div class="de2">            <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">                <span class="st0">&quot;category&quot;</span><span class="sy0">:</span><span class="st0">&quot;nutrition&quot;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                <span class="st0">&quot;type&quot;</span><span class="sy0">:</span><span class="st0">&quot;intake&quot;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                <span class="st0">&quot;fruit&quot;</span><span class="sy0">:</span><span class="br0">&#91;</span></div></li><li class="li2"><div class="de2">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;apple&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;banana&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;orange&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">90</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                <span class="br0">&#93;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                <span class="st0">&quot;vegetables&quot;</span><span class="sy0">:</span><span class="br0">&#91;</span></div></li><li class="li2"><div class="de2">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;baked potato&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">150</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;broccoli&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">50</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;green beans&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">30</span><span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">                <span class="br0">&#93;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#125;</span></div></li><li class="li2"><div class="de2">        <span class="br0">&#93;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        <span class="st0">&quot;program&quot;</span><span class="sy0">:</span> <span class="br0">&#91;</span></div></li><li class="li1"><div class="de1">            ...</div></li><li class="li1"><div class="de1">        <span class="br0">&#93;</span></div></li><li class="li1"><div class="de1">    <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2">    myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myData<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">    myCallback <span class="sy0">=</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">        success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li2"><div class="de2">        failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">    <span class="br0">&#125;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li2"><div class="de2">    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceJSONSchema</span><span class="sy0">,</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">        schema<span class="sy0">:</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">            resultListLocator<span class="sy0">:</span> <span class="st0">&quot;reference[1].fruit&quot;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span><span class="st0">&quot;name&quot;</span><span class="sy0">,</span><span class="st0">&quot;calories&quot;</span><span class="br0">&#93;</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#125;</span></div></li><li class="li2"><div class="de2">    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li1"><div class="de1">    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"><span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-jsonschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span>
    <span class="kw2">var</span> myData <span class="sy0">=</span> <span class="br0">&#123;</span>
        <span class="st0">&quot;profile&quot;</span><span class="sy0">:</span><span class="br0">&#123;</span>
            <span class="st0">&quot;current&quot;</span><span class="sy0">:</span><span class="nu0">160</span><span class="sy0">,</span>
            <span class="st0">&quot;target&quot;</span><span class="sy0">:</span><span class="nu0">150</span>
        <span class="br0">&#125;</span><span class="sy0">,</span>
        <span class="st0">&quot;reference&quot;</span><span class="sy0">:</span> <span class="br0">&#91;</span>
            <span class="br0">&#123;</span>
                ...
            <span class="br0">&#125;</span><span class="sy0">,</span>
            <span class="br0">&#123;</span>
                <span class="st0">&quot;category&quot;</span><span class="sy0">:</span><span class="st0">&quot;nutrition&quot;</span><span class="sy0">,</span>
                <span class="st0">&quot;type&quot;</span><span class="sy0">:</span><span class="st0">&quot;intake&quot;</span><span class="sy0">,</span>
                <span class="st0">&quot;fruit&quot;</span><span class="sy0">:</span><span class="br0">&#91;</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;apple&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">&#125;</span><span class="sy0">,</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;banana&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">70</span><span class="br0">&#125;</span><span class="sy0">,</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;orange&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">90</span><span class="br0">&#125;</span><span class="sy0">,</span>
                <span class="br0">&#93;</span><span class="sy0">,</span>
                <span class="st0">&quot;vegetables&quot;</span><span class="sy0">:</span><span class="br0">&#91;</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;baked potato&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">150</span><span class="br0">&#125;</span><span class="sy0">,</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;broccoli&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">50</span><span class="br0">&#125;</span><span class="sy0">,</span>
                    <span class="br0">&#123;</span><span class="st0">&quot;name&quot;</span><span class="sy0">:</span><span class="st0">&quot;green beans&quot;</span><span class="sy0">,</span> <span class="st0">&quot;calories&quot;</span><span class="sy0">:</span><span class="nu0">30</span><span class="br0">&#125;</span>
                <span class="br0">&#93;</span>
            <span class="br0">&#125;</span>
        <span class="br0">&#93;</span><span class="sy0">,</span>
        <span class="st0">&quot;program&quot;</span><span class="sy0">:</span> <span class="br0">&#91;</span>
            ...
        <span class="br0">&#93;</span>
    <span class="br0">&#125;</span><span class="sy0">,</span>
    myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myData<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span>
    myCallback <span class="sy0">=</span> <span class="br0">&#123;</span>
        success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
            <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span>
        <span class="br0">&#125;</span><span class="sy0">,</span>
        failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
            <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span>
        <span class="br0">&#125;</span>
    <span class="br0">&#125;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceJSONSchema</span><span class="sy0">,</span> <span class="br0">&#123;</span>
        schema<span class="sy0">:</span> <span class="br0">&#123;</span>
            resultListLocator<span class="sy0">:</span> <span class="st0">&quot;reference[1].fruit&quot;</span><span class="sy0">,</span>
            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span><span class="st0">&quot;name&quot;</span><span class="sy0">,</span><span class="st0">&quot;calories&quot;</span><span class="br0">&#93;</span>
        <span class="br0">&#125;</span>
    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></pre></div><textarea id="syntax-289409c78b0a02d231320d800a4b9a12-plain">YUI().use("datasource-local", "datasource-jsonschema", function(Y) {
    var myData = {
        "profile":{
            "current":160,
            "target":150
        },
        "reference": [
            {
                ...
            },
            {
                "category":"nutrition",
                "type":"intake",
                "fruit":[
                    {"name":"apple", "calories":70},
                    {"name":"banana", "calories":70},
                    {"name":"orange", "calories":90},
                ],
                "vegetables":[
                    {"name":"baked potato", "calories":150},
                    {"name":"broccoli", "calories":50},
                    {"name":"green beans", "calories":30}
                ]
            }
        ],
        "program": [
            ...
        ]
    },
    myDataSource = new Y.DataSource.Local({source:myData}),
    myCallback = {
        success: function(e){
            alert(e.response);
        },
        failure: function(e){
            alert("Could not retrieve data: " + e.error.message);
        }
    };

    myDataSource.plug(Y.Plugin.DataSourceJSONSchema, {
        schema: {
            resultListLocator: "reference[1].fruit",
            resultFields: ["name","calories"]
        }
    });

    myDataSource.sendRequest({callback:myCallback});
});</textarea></div>
<p>You can use the DataSourceXMLSchema plugin to work with DOM elements:</p>

<div id="syntax-beb1f9a24c76c4de397de37a1f95c488" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-xmlschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">    <span class="kw2">var</span> myTable <span class="sy0">=</span> Y.<span class="me1">Node</span>.<span class="me1">getDOMNode</span><span class="br0">&#40;</span>Y.<span class="me1">one</span><span class="br0">&#40;</span><span class="st0">&quot;#myTable&quot;</span><span class="br0">&#41;</span><span class="br0">&#41;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myTable<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">        myCallback <span class="sy0">=</span> <span class="br0">&#123;</span></div></li><li class="li2"><div class="de2">            success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">                <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">                <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li2"><div class="de2">            <span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">        <span class="br0">&#125;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li1"><div class="de1">    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceXMLSchema</span><span class="sy0">,</span> <span class="br0">&#123;</span></div></li><li class="li1"><div class="de1">        schema<span class="sy0">:</span> <span class="br0">&#123;</span></div></li><li class="li2"><div class="de2">            resultListLocator<span class="sy0">:</span> <span class="st0">&quot;tr&quot;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span></div></li><li class="li1"><div class="de1">                <span class="br0">&#123;</span>key<span class="sy0">:</span><span class="st0">&quot;beverage&quot;</span><span class="sy0">,</span> locator<span class="sy0">:</span><span class="st0">&quot;td[1]&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span></div></li><li class="li1"><div class="de1">                <span class="br0">&#123;</span>key<span class="sy0">:</span><span class="st0">&quot;price&quot;</span><span class="sy0">,</span> locator<span class="sy0">:</span><span class="st0">&quot;td[2]&quot;</span><span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">            <span class="br0">&#93;</span></div></li><li class="li2"><div class="de2">        <span class="br0">&#125;</span></div></li><li class="li1"><div class="de1">    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1">&nbsp;</div></li><li class="li1"><div class="de1">    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"><span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">YUI<span class="br0">&#40;</span><span class="br0">&#41;</span>.<span class="kw2">use</span><span class="br0">&#40;</span><span class="st0">&quot;datasource-local&quot;</span><span class="sy0">,</span> <span class="st0">&quot;datasource-xmlschema&quot;</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">&#40;</span>Y<span class="br0">&#41;</span> <span class="br0">&#123;</span>
    <span class="kw2">var</span> myTable <span class="sy0">=</span> Y.<span class="me1">Node</span>.<span class="me1">getDOMNode</span><span class="br0">&#40;</span>Y.<span class="me1">one</span><span class="br0">&#40;</span><span class="st0">&quot;#myTable&quot;</span><span class="br0">&#41;</span><span class="br0">&#41;</span><span class="sy0">,</span>
        myDataSource <span class="sy0">=</span> <span class="kw2">new</span> Y.<span class="me1">DataSource</span>.<span class="me1">Local</span><span class="br0">&#40;</span><span class="br0">&#123;</span>source<span class="sy0">:</span>myTable<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">,</span>
        myCallback <span class="sy0">=</span> <span class="br0">&#123;</span>
            success<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
                <span class="kw3">alert</span><span class="br0">&#40;</span>e.<span class="me1">response</span><span class="br0">&#41;</span><span class="sy0">;</span>
            <span class="br0">&#125;</span><span class="sy0">,</span>
            failure<span class="sy0">:</span> <span class="kw2">function</span><span class="br0">&#40;</span>e<span class="br0">&#41;</span><span class="br0">&#123;</span>
                <span class="kw3">alert</span><span class="br0">&#40;</span><span class="st0">&quot;Could not retrieve data: &quot;</span> <span class="sy0">+</span> e.<span class="me1">error</span>.<span class="me1">message</span><span class="br0">&#41;</span><span class="sy0">;</span>
            <span class="br0">&#125;</span>
        <span class="br0">&#125;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">plug</span><span class="br0">&#40;</span>Y.<span class="me1">Plugin</span>.<span class="me1">DataSourceXMLSchema</span><span class="sy0">,</span> <span class="br0">&#123;</span>
        schema<span class="sy0">:</span> <span class="br0">&#123;</span>
            resultListLocator<span class="sy0">:</span> <span class="st0">&quot;tr&quot;</span><span class="sy0">,</span>
            resultFields<span class="sy0">:</span> <span class="br0">&#91;</span>
                <span class="br0">&#123;</span>key<span class="sy0">:</span><span class="st0">&quot;beverage&quot;</span><span class="sy0">,</span> locator<span class="sy0">:</span><span class="st0">&quot;td[1]&quot;</span><span class="br0">&#125;</span><span class="sy0">,</span>
                <span class="br0">&#123;</span>key<span class="sy0">:</span><span class="st0">&quot;price&quot;</span><span class="sy0">,</span> locator<span class="sy0">:</span><span class="st0">&quot;td[2]&quot;</span><span class="br0">&#125;</span>
            <span class="br0">&#93;</span>
        <span class="br0">&#125;</span>
    <span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
&nbsp;
    myDataSource.<span class="me1">sendRequest</span><span class="br0">&#40;</span><span class="br0">&#123;</span>callback<span class="sy0">:</span>myCallback<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="br0">&#125;</span><span class="br0">&#41;</span><span class="sy0">;</span></pre></div><textarea id="syntax-beb1f9a24c76c4de397de37a1f95c488-plain">YUI().use("datasource-local", "datasource-xmlschema", function(Y) {
    var myTable = Y.Node.getDOMNode(Y.one("#myTable")),
        myDataSource = new Y.DataSource.Local({source:myTable}),
        myCallback = {
            success: function(e){
                alert(e.response);
            },
            failure: function(e){
                alert("Could not retrieve data: " + e.error.message);
            }
        };

    myDataSource.plug(Y.Plugin.DataSourceXMLSchema, {
        schema: {
            resultListLocator: "tr",
            resultFields: [
                {key:"beverage", locator:"td[1]"},
                {key:"price", locator:"td[2]"}
            ]
        }
    });

    myDataSource.sendRequest({callback:myCallback});
});</textarea></div>				</div>
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					<div id="examples" class="mod box4">
                        <div class="hd">
						<h4>
    DataSource Utility Examples:</h4>
                        </div>
						<div class="bd">
							<ul>
								<li class='selected'><a href='../datasource/datasource_local.html'>DataSource.Local</a></li><li><a href='../datasource/datasource_get.html'>DataSource.Get</a></li><li><a href='../datasource/datasource_io.html'>DataSource.IO</a></li><li><a href='../datasource/datasource_function.html'>DataSource.Function</a></li><li><a href='../datasource/datasource_caching.html'>DataSource with Caching</a></li><li><a href='../datasource/datasource_polling.html'>DataSource with Polling</a></li>							</ul>
						</div>
					</div>
					
					<div class="mod box4">
                        <div class="hd">
						<h4>More DataSource Utility Resources:</h4>
                        </div>
                        <div class="bd">
						<ul>
							<!-- <li><a href="http://developer.yahoo.com/yui/datasource/">User's Guide</a> (external)</li> -->
<li><a href="../../api/module_datasource.html">API Documentation</a></li></ul>
                        </div>
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